├── .expo-shared
    └── assets.json
├── .gitignore
├── App.tsx
├── README.md
├── app.json
├── assets
    ├── fonts
    │   └── SpaceMono-Regular.ttf
    ├── images
    │   ├── favicon.png
    │   ├── icon.png
    │   └── splash.png
    └── model_tfjs
    │   └── .gitkeep
├── babel.config.js
├── components
    ├── ModelService.tsx
    ├── StyledText.tsx
    ├── Themed.tsx
    └── __tests__
    │   └── StyledText-test.js
├── config.tsx
├── constants
    ├── Colors.ts
    └── Layout.ts
├── demo
    └── app_in_action.gif
├── hooks
    ├── useCachedResources.ts
    ├── useColorScheme.ts
    └── useColorScheme.web.ts
├── metro.config.js
├── navigation
    ├── BottomTabNavigator.tsx
    ├── LinkingConfiguration.ts
    └── index.tsx
├── notes.md
├── package.json
├── screens
    ├── AboutScreen.tsx
    ├── DebugScreen.tsx
    ├── HomeScreen.tsx
    └── NotFoundScreen.tsx
├── test.md
├── tsconfig.json
├── types.tsx
├── yarn-error.log
└── yarn.lock


/.expo-shared/assets.json:
--------------------------------------------------------------------------------
1 | {
2 |   "e997a5256149a4b76e6bfd6cbf519c5e5a0f1d278a3d8fa1253022b03c90473b": true,
3 |   "af683c96e0ffd2cf81287651c9433fa44debc1220ca7cb431fe482747f34a505": true,
4 |   "12bb71342c6255bbf50437ec8f4441c083f47cdb74bd89160c15e4f43e52a1cb": true,
5 |   "40b842e832070c58deac6aa9e08fa459302ee3f9da492c7e77d93d2fbf4a56fd": true
6 | }
7 | 


--------------------------------------------------------------------------------
/.gitignore:
--------------------------------------------------------------------------------
 1 | node_modules/**/*
 2 | .expo/*
 3 | npm-debug.*
 4 | *.jks
 5 | *.p8
 6 | *.p12
 7 | *.key
 8 | *.mobileprovision
 9 | *.orig.*
10 | web-build/
11 | 
12 | # macOS
13 | .DS_Store
14 | .vscode
15 | assets/model_tfjs/*
16 | 
17 | !assets/model_tfjs/.gitkeep


--------------------------------------------------------------------------------
/App.tsx:
--------------------------------------------------------------------------------
 1 | import { StatusBar } from 'expo-status-bar';
 2 | import React from 'react';
 3 | import { SafeAreaProvider } from 'react-native-safe-area-context';
 4 | 
 5 | import useCachedResources from './hooks/useCachedResources';
 6 | import useColorScheme from './hooks/useColorScheme';
 7 | import Navigation from './navigation';
 8 | import { Button, ThemeProvider } from 'react-native-elements';
 9 | 
10 | 
11 | export default function App() {
12 |   const isLoadingComplete = useCachedResources();
13 |   const colorScheme = useColorScheme();
14 | 
15 |   if (!isLoadingComplete) {
16 |     return null;
17 |   } else {
18 |     return (
19 |       <SafeAreaProvider>
20 |             <ThemeProvider>
21 | 
22 |           <Navigation colorScheme={colorScheme} />
23 |           <StatusBar />
24 |           </ThemeProvider>
25 | 
26 |       </SafeAreaProvider>
27 |       
28 |     );
29 |   }
30 | }
31 | 


--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
 1 | # deploying-mobile-app
 2 | 
 3 | 
 4 | ## About
 5 | 
 6 | This is a sample template repo showing how to use tensorflow.js with react native. 
 7 | 
 8 | Here is the app in action.
 9 | 
10 | ![In Action](demo/app_in_action.gif)
11 | 
12 | 
13 | 
14 | ## Assumptions
15 | 
16 | In order to use this repo, you need to have a tfjs model. You can get a smaple artifact from this repo's release. 
17 | 
18 | Please download it from this repos's release and place the contents in `assets/model_tfjs`
19 | 
20 | ```
21 | (base) deploying-mobile-app % tree assets/model_tfjs 
22 | assets/model_tfjs
23 | ├── classes.json
24 | ├── classes.txt
25 | ├── group1-shard1of1.bin
26 | └── model.json
27 | ```
28 | 
29 | If you want to bring in your own model, please use a command like below to convert a keras h5 artifact.
30 | 
31 | The below command converts `artifacts/model_tf_keras.h5` to  tfjs and saves it to `artifacts/model_tfjs`.
32 | 
33 | The model is also 16 bit quanitzed.   
34 | The model is converted to `tfjs_graph_model` which is an optimized version of the graph.
35 | The model is broken into 100MB shards.
36 | 
37 | ```
38 | pip install tensorflowjs==2.3.0
39 | 
40 | tensorflowjs_converter \
41 | --input_format=keras \
42 | --output_format=tfjs_graph_model \
43 | --split_weights_by_layer \
44 | --weight_shard_size_bytes=99999999 \ 
45 | --quantize_float16=* \
46 | artifacts/model_tf_keras.h5 artifacts/model_tfjs
47 | ```
48 | 
49 | 
50 | 
51 | ## Running 
52 | 
53 | 
54 | ```
55 | yarn global add expo-cli    
56 | 
57 | # you can open iOS, Android, or web from here, or run them directly with the commands below.
58 | yarn start 
59 | 
60 | # you can open in android simulator or device driectly
61 | yarn android 
62 | 
63 | # you can open in ios simulator or device directly
64 | yarn ios
65 | 
66 | 
67 | ```
68 | 
69 | 
70 | 
71 | 
72 | ## Future
73 | 
74 | In the future, it is possible that packages may be out of date.
75 | 
76 | The below upgrade will upgrade expo and its dependencies
77 | ```
78 | expo upgrade
79 | ```
80 | 
81 | The below command command can be used to interactively update  dependencies.
82 | 
83 | ```
84 | yarn upgrade-interactive       
85 | ```
86 | 
87 | ## Other
88 | 
89 | If you are interested in a guided exploration of this content, consider Manning's Live project [Deploying a Deep Learning Model on Web and Mobile Applications
90 | ](https://www.manning.com/liveproject/deploying-a-deep-learning-model-on-web-and-mobile-applications)
91 | 


--------------------------------------------------------------------------------
/app.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "expo": {
 3 |     "name": "mobile-app",
 4 |     "slug": "mobile-app",
 5 |     "version": "1.0.0",
 6 |     "orientation": "portrait",
 7 |     "icon": "./assets/images/icon.png",
 8 |     "scheme": "myapp",
 9 |     "userInterfaceStyle": "automatic",
10 |     "splash": {
11 |       "image": "./assets/images/splash.png",
12 |       "resizeMode": "contain",
13 |       "backgroundColor": "#ffffff"
14 |     },
15 |     "updates": {
16 |       "fallbackToCacheTimeout": 0
17 |     },
18 |     "assetBundlePatterns": [
19 |       "**/*"
20 |     ],
21 |     "ios": {
22 |       "supportsTablet": true
23 |     },
24 |     "web": {
25 |       "favicon": "./assets/images/favicon.png"
26 |     }
27 |   }
28 | }
29 | 


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/assets/fonts/SpaceMono-Regular.ttf:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/assets/fonts/SpaceMono-Regular.ttf


--------------------------------------------------------------------------------
/assets/images/favicon.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/assets/images/favicon.png


--------------------------------------------------------------------------------
/assets/images/icon.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/assets/images/icon.png


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/assets/images/splash.png:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/assets/images/splash.png


--------------------------------------------------------------------------------
/assets/model_tfjs/.gitkeep:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/assets/model_tfjs/.gitkeep


--------------------------------------------------------------------------------
/babel.config.js:
--------------------------------------------------------------------------------
 1 | module.exports = function(api) {
 2 |   api.cache(true);
 3 |   return {
 4 |     presets: ['babel-preset-expo'],
 5 |     env: {
 6 |       production: {
 7 |         plugins: ['react-native-paper/babel'],
 8 |       },
 9 |     }
10 |   };
11 | };
12 | 


--------------------------------------------------------------------------------
/components/ModelService.tsx:
--------------------------------------------------------------------------------
  1 | import * as tf from '@tensorflow/tfjs';
  2 | import * as FileSystem from 'expo-file-system'
  3 | import { fetch ,asyncStorageIO,bundleResourceIO,decodeJpeg} from '@tensorflow/tfjs-react-native'
  4 | import {Image} from 'react-native';
  5 | import * as ImageManipulator from 'expo-image-manipulator';
  6 | import {AppConfig} from "../config"
  7 | 
  8 | export interface ModelPrediction {
  9 |   className:string;
 10 |   probability:number;
 11 | }
 12 | 
 13 | export interface IModelPredictionTiming {
 14 |   totalTime:number;
 15 |   imageLoadingTime:number;
 16 |   imagePreprocessing:number;
 17 |   imagePrediction:number;
 18 |   imageDecodePrediction:number;
 19 | }
 20 | 
 21 | export interface IModelPredictionResponse {
 22 |   predictions?:ModelPrediction[] | null
 23 |   timing?:IModelPredictionTiming | null
 24 |   error?:string | null
 25 | }
 26 | 
 27 | const imageToTensor = (rawImageData:Uint8Array)=> {
 28 |   return decodeJpeg(rawImageData);
 29 | }
 30 | 
 31 | 
 32 | const  fetchImage = async (image:ImageManipulator.ImageResult) => {
 33 |   let imgB64:string;
 34 |   if(image.base64){
 35 |     imgB64=image.base64
 36 |   }else{ 
 37 |     const imageAssetPath = Image.resolveAssetSource(image)
 38 |     console.log(imageAssetPath.uri);
 39 |   
 40 |     imgB64 = await FileSystem.readAsStringAsync(imageAssetPath.uri, {
 41 |       encoding: FileSystem.EncodingType.Base64,
 42 |     });
 43 |   }
 44 |  
 45 |   const imgBuffer = tf.util.encodeString(imgB64, 'base64').buffer;
 46 |   const rawImageData = new Uint8Array(imgBuffer)  
 47 | 
 48 |   return rawImageData;
 49 | }
 50 | const preprocessImage = (img:tf.Tensor3D,imageSize:number) =>{
 51 |       // https://github.com/keras-team/keras-applications/blob/master/keras_applications/imagenet_utils.py#L43
 52 | 
 53 |       let imageTensor = img.resizeBilinear([imageSize, imageSize]).toFloat();
 54 | 
 55 |       const offset = tf.scalar(127.5);
 56 |       const normalized = imageTensor.sub(offset).div(offset);
 57 |       const preProcessedImage = normalized.reshape([1, imageSize, imageSize, 3]);
 58 |       return preProcessedImage;
 59 |       
 60 | }
 61 | 
 62 | const decodePredictions = (predictions:tf.Tensor, classes:String[],topK=3) =>{
 63 |   const {values, indices} = predictions.topk(topK);
 64 |   const topKValues = values.dataSync();
 65 |   const topKIndices = indices.dataSync();
 66 | 
 67 |   const topClassesAndProbs:ModelPrediction[] = [];
 68 |   for (let i = 0; i < topKIndices.length; i++) {
 69 |     topClassesAndProbs.push({
 70 |       className: classes[topKIndices[i]],
 71 |       probability: topKValues[i]
 72 |     } as ModelPrediction);
 73 |   }
 74 |   return topClassesAndProbs;
 75 | }
 76 | 
 77 | 
 78 | export class ModelService {
 79 | 
 80 |     private model:tf.GraphModel;
 81 |     private model_classes: String[];
 82 |     private imageSize:number;
 83 |     private static instance: ModelService;
 84 | 
 85 |     constructor(imageSize:number,model:tf.GraphModel, model_classes: String[] ){
 86 |         this.imageSize=imageSize;
 87 |         this.model = model;
 88 |         this.model_classes=model_classes;
 89 |     }
 90 | 
 91 | 
 92 |     static async create(imageSize:number) {
 93 |       if (!ModelService.instance){
 94 |         await tf.ready(); 
 95 |         const modelJSON = require('../assets/model_tfjs/model.json');
 96 |         const modelWeights = require('../assets/model_tfjs/group1-shard1of1.bin');
 97 |         const model_classes = require("../assets/model_tfjs/classes.json")
 98 | 
 99 |         const model = await tf.loadGraphModel(bundleResourceIO(modelJSON, modelWeights));
100 |         model.predict(tf.zeros([1, imageSize, imageSize, 3]));
101 |         
102 |         ModelService.instance = new ModelService(imageSize,model,model_classes);
103 |       }
104 | 
105 |       return ModelService.instance;
106 | 
107 |     }
108 | 
109 |     async classifyImage(image:ImageManipulator.ImageResult):Promise<IModelPredictionResponse>{ 
110 |       const predictionResponse = {timing:null,predictions:null,error:null} as IModelPredictionResponse;
111 |       try {
112 |           console.log(`Classifying Image: Start `)
113 |           
114 |           let imgBuffer:Uint8Array = await fetchImage(image); 
115 |           const timeStart = new Date().getTime()
116 |           console.log(`Backend: ${tf.getBackend()} `)
117 |           tf.tidy(()=>{
118 |             console.log(`Fetching Image: Start `)
119 |           
120 |             const imageTensor:tf.Tensor3D = imageToTensor(imgBuffer);
121 |             
122 |             
123 |             console.log(`Fetching Image: Done `)
124 |             const timeLoadDone = new Date().getTime()
125 |       
126 |             console.log("Preprocessing image: Start")
127 |             
128 |             const preProcessedImage = preprocessImage(imageTensor,this.imageSize);
129 |       
130 |             console.log("Preprocessing image: Done")
131 |             const timePrepocessDone = new Date().getTime()
132 |       
133 |             console.log("Prediction: Start")
134 |             const predictionsTensor:tf.Tensor = this.model.predict(preProcessedImage) as tf.Tensor;
135 |             
136 |             console.log("Prediction: Done")
137 |             const timePredictionDone = new Date().getTime()
138 |       
139 |             console.log("Post Processing: Start")
140 |       
141 |             // post processing
142 |             predictionResponse.predictions  = decodePredictions(predictionsTensor,this.model_classes,AppConfig.topK);
143 |             
144 |             
145 |             //tf.dispose(imageTensor);
146 |             //tf.dispose(preProcessedImage);
147 |             //tf.dispose(predictions);
148 | 
149 |             console.log("Post Processing: Done")
150 | 
151 |             const timeEnd = new Date().getTime()
152 |             
153 |             const timing:IModelPredictionTiming = {
154 |               totalTime: timeEnd-timeStart,
155 |               imageLoadingTime : timeLoadDone-timeStart,
156 |               imagePreprocessing : timePrepocessDone-timeLoadDone,
157 |               imagePrediction : timePredictionDone-timePrepocessDone ,
158 |               imageDecodePrediction : timeEnd-timePredictionDone
159 |             } as IModelPredictionTiming;
160 |             predictionResponse.timing = timing;
161 | 
162 |           });
163 |           
164 |           
165 |           console.log(`Classifying Image: End `);
166 | 
167 |           console.log(`Response:  ${JSON.stringify(predictionResponse ,null, 2 ) } `);
168 |           return predictionResponse as IModelPredictionResponse
169 |           
170 |       } catch (error) {
171 |           console.log('Exception Error: ', error)
172 |           return {error}
173 |       }
174 |     }
175 | }
176 | 
177 | 


--------------------------------------------------------------------------------
/components/StyledText.tsx:
--------------------------------------------------------------------------------
1 | import * as React from 'react';
2 | 
3 | import { Text, TextProps } from './Themed';
4 | 
5 | export function MonoText(props: TextProps) {
6 |   return <Text {...props} style={[props.style, { fontFamily: 'space-mono' }]} />;
7 | }
8 | 


--------------------------------------------------------------------------------
/components/Themed.tsx:
--------------------------------------------------------------------------------
 1 | import * as React from 'react';
 2 | import { View as DefaultView ,ScrollView as DefaultScrollView, ActivityIndicator as DefaultActivityIndicator } from 'react-native';
 3 | import {Text as DefaultText, ListItem as DefaultListItem } from 'react-native-elements';
 4 | 
 5 | import Colors from '../constants/Colors';
 6 | import useColorScheme from '../hooks/useColorScheme';
 7 | 
 8 | export function useThemeColor(
 9 |   props: { light?: string; dark?: string },
10 |   colorName: keyof typeof Colors.light & keyof typeof Colors.dark
11 | ) {
12 |   const theme = useColorScheme();
13 |   const colorFromProps = props[theme];
14 | 
15 |   if (colorFromProps) {
16 |     return colorFromProps;
17 |   } else {
18 |     return Colors[theme][colorName];
19 |   }
20 | }
21 | 
22 | type ThemeProps = {
23 |   lightColor?: string;
24 |   darkColor?: string;
25 | };
26 | 
27 | export type TextProps = ThemeProps & DefaultText['props'];
28 | export type ViewProps = ThemeProps & DefaultView['props'];
29 | 
30 | export function Text(props: TextProps) {
31 |   const { style, lightColor, darkColor, ...otherProps } = props;
32 |   const color = useThemeColor({ light: lightColor, dark: darkColor }, 'text');
33 | 
34 |   return <DefaultText style={[{ color }, style]} {...otherProps} />;
35 | }
36 | 
37 | export function View(props: ViewProps) {
38 |   const { style, lightColor, darkColor, ...otherProps } = props;
39 |   const backgroundColor = useThemeColor({ light: lightColor, dark: darkColor }, 'background');
40 | 
41 |   return <DefaultView style={[{ backgroundColor }, style]} {...otherProps} />;
42 | }
43 | 
44 | export function ScrollView(props: ViewProps) {
45 |   const { style, lightColor, darkColor, ...otherProps } = props;
46 |   const backgroundColor = useThemeColor({ light: lightColor, dark: darkColor }, 'background');
47 | 
48 |   return <DefaultScrollView style={[{ backgroundColor }, style]} {...otherProps} />;
49 | }
50 | 
51 | 
52 | export function getColor(property:keyof typeof Colors.light & keyof typeof Colors.dark){
53 | 
54 |   //const backgroundColor = useThemeColor({ light: Colors.lightColor, dark: darkColor }, property);
55 |   const theme = useColorScheme();
56 | 
57 |   
58 |   const color =  Colors[theme][property];
59 |   return color as string;
60 | }
61 | 
62 | export function ActivityIndicator(props: ViewProps) {
63 |   const { style, lightColor, darkColor, ...otherProps } = props;
64 |   const textColor = useThemeColor({ light: lightColor, dark: darkColor }, 'text');
65 | 
66 |   return <DefaultActivityIndicator size="large" color={textColor}/>
67 | }
68 | 
69 | 
70 | export function ListItem(props: any) {
71 |   const { style, lightColor, darkColor, ...otherProps } = props;
72 |   const backgroundColor = useThemeColor({ light: lightColor, dark: darkColor }, 'background');
73 |   const color = useThemeColor({ light: lightColor, dark: darkColor }, 'text');
74 | 
75 | 
76 |   return <DefaultListItem containerStyle={[{ backgroundColor,color }, style]} style={[{ backgroundColor,color }, style]} {...otherProps} />;
77 | }
78 | 


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/components/__tests__/StyledText-test.js:
--------------------------------------------------------------------------------
 1 | import * as React from 'react';
 2 | import renderer from 'react-test-renderer';
 3 | 
 4 | import { MonoText } from '../StyledText';
 5 | 
 6 | it(`renders correctly`, () => {
 7 |   const tree = renderer.create(<MonoText>Snapshot test!</MonoText>).toJSON();
 8 | 
 9 |   expect(tree).toMatchSnapshot();
10 | });
11 | 


--------------------------------------------------------------------------------
/config.tsx:
--------------------------------------------------------------------------------
 1 | const AppConfig = 
 2 | 
 3 | {
 4 |     title : "Food Classifier"
 5 |     ,description: `
 6 |     
 7 | This mobile app was developed by 
 8 | - [Nidhin Pattaniyil](https://npatta01.github.io)
 9 | - [Reshama Shaikh](https://reshamas.github.io/)
10 | 
11 | This app lets you submit a photo of food and returns the predicted food category. 🍕
12 | 
13 | The model was developed using the [Food-101 dataset](https://www.vision.ee.ethz.ch/datasets_extra/food-101/) and TensorFlow 2.3.0.
14 |     
15 | This is a Manning [liveProject](https://liveproject.manning.com).
16 | 
17 | Notes:  
18 | - Time to inference will vary by user as it is dependent on the hardware.  
19 |     `
20 |     ,imageSize :224
21 |     ,topK:3 
22 |     ,precision:2
23 | 
24 | };
25 | 
26 | 
27 | export {AppConfig}


--------------------------------------------------------------------------------
/constants/Colors.ts:
--------------------------------------------------------------------------------
 1 | const tintColorLight = '#2f95dc';
 2 | const tintColorDark = '#fff';
 3 | 
 4 | export default {
 5 |   light: {
 6 |     text: '#000',
 7 |     background: '#fff',
 8 |     tint: tintColorLight,
 9 |     tabIconDefault: '#ccc',
10 |     tabIconSelected: tintColorLight,
11 |   },
12 |   dark: {
13 |     text: '#fff',
14 |     background: '#000',
15 |     tint: tintColorDark,
16 |     tabIconDefault: '#ccc',
17 |     tabIconSelected: tintColorDark,
18 |   },
19 | };
20 | 


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/constants/Layout.ts:
--------------------------------------------------------------------------------
 1 | import { Dimensions } from 'react-native';
 2 | 
 3 | const width = Dimensions.get('window').width;
 4 | const height = Dimensions.get('window').height;
 5 | 
 6 | export default {
 7 |   window: {
 8 |     width,
 9 |     height,
10 |   },
11 |   isSmallDevice: width < 375,
12 | };
13 | 


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/demo/app_in_action.gif:
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https://raw.githubusercontent.com/reshamas/deploying-mobile-app/82aca213e2e76d6a9f08d50efb66fa381abbf846/demo/app_in_action.gif


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/hooks/useCachedResources.ts:
--------------------------------------------------------------------------------
 1 | import { Ionicons } from '@expo/vector-icons';
 2 | import * as Font from 'expo-font';
 3 | import * as SplashScreen from 'expo-splash-screen';
 4 | import * as React from 'react';
 5 | 
 6 | export default function useCachedResources() {
 7 |   const [isLoadingComplete, setLoadingComplete] = React.useState(false);
 8 | 
 9 |   // Load any resources or data that we need prior to rendering the app
10 |   React.useEffect(() => {
11 |     async function loadResourcesAndDataAsync() {
12 |       try {
13 |         SplashScreen.preventAutoHideAsync();
14 | 
15 |         // Load fonts
16 |         await Font.loadAsync({
17 |           ...Ionicons.font,
18 |           'space-mono': require('../assets/fonts/SpaceMono-Regular.ttf'),
19 |         });
20 |       } catch (e) {
21 |         // We might want to provide this error information to an error reporting service
22 |         console.warn(e);
23 |       } finally {
24 |         setLoadingComplete(true);
25 |         SplashScreen.hideAsync();
26 |       }
27 |     }
28 | 
29 |     loadResourcesAndDataAsync();
30 |   }, []);
31 | 
32 |   return isLoadingComplete;
33 | }
34 | 


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/hooks/useColorScheme.ts:
--------------------------------------------------------------------------------
1 | import { ColorSchemeName, useColorScheme as _useColorScheme } from 'react-native';
2 | 
3 | // The useColorScheme value is always either light or dark, but the built-in
4 | // type suggests that it can be null. This will not happen in practice, so this
5 | // makes it a bit easier to work with.
6 | export default function useColorScheme(): NonNullable<ColorSchemeName> {
7 |   return _useColorScheme() as NonNullable<ColorSchemeName>;
8 | }
9 | 


--------------------------------------------------------------------------------
/hooks/useColorScheme.web.ts:
--------------------------------------------------------------------------------
1 | // useColorScheme from react-native does not support web currently. You can replace
2 | // this with react-native-appearance if you would like theme support on web.
3 | export default function useColorScheme() {
4 |   return 'light';
5 | }


--------------------------------------------------------------------------------
/metro.config.js:
--------------------------------------------------------------------------------
 1 | /**
 2 |  * @license
 3 |  * Copyright 2020 Google LLC. All Rights Reserved.
 4 |  * Licensed under the Apache License, Version 2.0 (the "License");
 5 |  * you may not use this file except in compliance with the License.
 6 |  * You may obtain a copy of the License at
 7 |  *
 8 |  * http://www.apache.org/licenses/LICENSE-2.0
 9 |  *
10 |  * Unless required by applicable law or agreed to in writing, software
11 |  * distributed under the License is distributed on an "AS IS" BASIS,
12 |  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 |  * See the License for the specific language governing permissions and
14 |  * limitations under the License.
15 |  * =============================================================================
16 |  */
17 | 
18 | 
19 | const { getDefaultConfig } = require('metro-config');
20 | module.exports = (async () => {
21 |   const defaultConfig = await getDefaultConfig();
22 |   const { assetExts } = defaultConfig.resolver;  
23 |   return {    
24 |     resolver: {
25 |       assetExts: [...assetExts, 'bin'],      
26 |     }
27 |   };
28 | })();


--------------------------------------------------------------------------------
/navigation/BottomTabNavigator.tsx:
--------------------------------------------------------------------------------
 1 | import { Ionicons } from '@expo/vector-icons';
 2 | import { createBottomTabNavigator } from '@react-navigation/bottom-tabs';
 3 | import { createStackNavigator } from '@react-navigation/stack';
 4 | import * as React from 'react';
 5 | import { Platform } from 'react-native';
 6 | 
 7 | import Colors from '../constants/Colors';
 8 | import useColorScheme from '../hooks/useColorScheme';
 9 | import HomeScreen from '../screens/HomeScreen';
10 | import AboutScreen from '../screens/AboutScreen';
11 | import DebugScreen from '../screens/DebugScreen';
12 | import { BottomTabParamList, HomeParamList, AboutParamList, DebugParamList } from '../types';
13 | 
14 | const BottomTab = createBottomTabNavigator<BottomTabParamList>();
15 | 
16 | export default function BottomTabNavigator() {
17 |   const colorScheme = useColorScheme();
18 | 
19 |   return (
20 |     <BottomTab.Navigator
21 |       initialRouteName="Home"
22 |       tabBarOptions={{ activeTintColor: Colors[colorScheme].tint }}>
23 |       <BottomTab.Screen
24 |         name="Home"
25 |         component={HomeNavigator}
26 |         options={{
27 |           tabBarIcon: ({ color }) => <TabBarIcon color={color} name={Platform.OS === 'ios' ? 'ios-home' : 'md-home'} />,
28 |         }}
29 |       />
30 |       <BottomTab.Screen
31 |         name="About"
32 |         component={TabAboutNavigator}
33 |         options={{
34 |           tabBarIcon: ({ color }) => <TabBarIcon color={color} name={Platform.OS === 'ios' ? 'ios-information' : 'md-information'} />,
35 |         }}
36 |       />
37 |       <BottomTab.Screen
38 |         name="Debug"
39 |         component={TabDebugNavigator}
40 |         options={{
41 |           tabBarIcon: ({ color }) => <TabBarIcon color={color} name={Platform.OS === 'ios' ? 'ios-options' : 'md-options'} />,
42 |         }}
43 |       />
44 |     </BottomTab.Navigator>
45 |   );
46 | }
47 | 
48 | // You can explore the built-in icon families and icons on the web at:
49 | // https://icons.expo.fyi/
50 | function TabBarIcon(props: { name: string; color: string }) {
51 |   return <Ionicons size={30} style={{ marginBottom: -3 }} {...props} />;
52 | }
53 | 
54 | // Each tab has its own navigation stack, you can read more about this pattern here:
55 | // https://reactnavigation.org/docs/tab-based-navigation#a-stack-navigator-for-each-tab
56 | const HomeStack = createStackNavigator<HomeParamList>();
57 | 
58 | function HomeNavigator() {
59 |   return (
60 |     <HomeStack.Navigator>
61 |       <HomeStack.Screen
62 |         name="HomeScreen"
63 |         component={HomeScreen}
64 |         options={{ headerTitle: 'Home' }}
65 |       />
66 |     </HomeStack.Navigator>
67 |   );
68 | }
69 | 
70 | const AboutTabStack = createStackNavigator<AboutParamList>();
71 | 
72 | function TabAboutNavigator() {
73 |   return (
74 |     <AboutTabStack.Navigator>
75 |       <AboutTabStack.Screen
76 |         name="AboutScreen"
77 |         component={AboutScreen}
78 |         options={{ headerTitle: 'About' }}
79 |       />
80 |     </AboutTabStack.Navigator>
81 |   );
82 | }
83 | 
84 | const DebugTabStack = createStackNavigator<DebugParamList>();
85 | 
86 | function TabDebugNavigator() {
87 |   return (
88 |     <DebugTabStack.Navigator>
89 |       <DebugTabStack.Screen
90 |         name="DebugScreen"
91 |         component={DebugScreen}
92 |         options={{ headerTitle: 'Debug' }}
93 |       />
94 |     </DebugTabStack.Navigator>
95 |   );
96 | }


--------------------------------------------------------------------------------
/navigation/LinkingConfiguration.ts:
--------------------------------------------------------------------------------
 1 | import * as Linking from 'expo-linking';
 2 | 
 3 | export default {
 4 |   prefixes: [Linking.makeUrl('/')],
 5 |   config: {
 6 |     screens: {
 7 |       Root: {
 8 |         screens: {
 9 |           TabHome: {
10 |             screens: {
11 |               HomeScreen: 'one',
12 |             },
13 |           },
14 |           TabAbout: {
15 |             screens: {
16 |               AboutScreen: 'two',
17 |             },
18 |           },
19 |           TabDebug: {
20 |             screens: {
21 |               DebugScreen: 'three',
22 |             },
23 |           },
24 |         },
25 |       },
26 |       NotFound: '*',
27 |     },
28 |   },
29 | };
30 | 


--------------------------------------------------------------------------------
/navigation/index.tsx:
--------------------------------------------------------------------------------
 1 | import { NavigationContainer, DefaultTheme, DarkTheme } from '@react-navigation/native';
 2 | import { createStackNavigator } from '@react-navigation/stack';
 3 | import * as React from 'react';
 4 | import { ColorSchemeName } from 'react-native';
 5 | 
 6 | import NotFoundScreen from '../screens/NotFoundScreen';
 7 | import { RootStackParamList } from '../types';
 8 | import BottomTabNavigator from './BottomTabNavigator';
 9 | import LinkingConfiguration from './LinkingConfiguration';
10 | 
11 | // If you are not familiar with React Navigation, we recommend going through the
12 | // "Fundamentals" guide: https://reactnavigation.org/docs/getting-started
13 | export default function Navigation({ colorScheme }: { colorScheme: ColorSchemeName }) {
14 |   return (
15 |     <NavigationContainer
16 |       linking={LinkingConfiguration}
17 |       theme={colorScheme === 'dark' ? DarkTheme : DefaultTheme}>
18 |       <RootNavigator />
19 |     </NavigationContainer>
20 |   );
21 | }
22 | 
23 | // A root stack navigator is often used for displaying modals on top of all other content
24 | // Read more here: https://reactnavigation.org/docs/modal
25 | const Stack = createStackNavigator<RootStackParamList>();
26 | 
27 | function RootNavigator() {
28 |   return (
29 |     <Stack.Navigator screenOptions={{ headerShown: false }}>
30 |       <Stack.Screen name="Root" component={BottomTabNavigator} />
31 |       <Stack.Screen name="NotFound" component={NotFoundScreen} options={{ title: 'Oops!' }} />
32 |     </Stack.Navigator>
33 |   );
34 | }
35 | 


--------------------------------------------------------------------------------
/notes.md:
--------------------------------------------------------------------------------
1 | https://github.com/yzzhang/machine-learning/blob/master/mobile_apps/mobile_bert/components/TabBarIcon.js
2 | 
3 | https://towardsdatascience.com/deep-learning-for-detecting-objects-in-an-image-on-mobile-devices-7d5b2e5621f9
4 | 
5 | https://github.com/tensorflow/tfjs/issues/3070


--------------------------------------------------------------------------------
/package.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "main": "node_modules/expo/AppEntry.js",
 3 |   "scripts": {
 4 |     "start": "expo start",
 5 |     "android": "expo start --android",
 6 |     "ios": "expo start --ios",
 7 |     "web": "expo start --web",
 8 |     "eject": "expo eject",
 9 |     "test": "jest --watchAll"
10 |   },
11 |   "jest": {
12 |     "preset": "jest-expo"
13 |   },
14 |   "dependencies": {
15 |     "@expo/vector-icons": "^12.0.0",
16 |     "@react-native-community/async-storage": "~1.12.0",
17 |     "@react-native-community/masked-view": "0.1.10",
18 |     "@react-navigation/bottom-tabs": "^5.6.1",
19 |     "@react-navigation/native": "^5.6.1",
20 |     "@react-navigation/stack": "^5.6.2",
21 |     "@tensorflow/tfjs": "^2.3.0",
22 |     "@tensorflow/tfjs-react-native": "^0.5.0",
23 |     "expo": "^40.0.0",
24 |     "expo-asset": "~8.2.1",
25 |     "expo-camera": "~9.1.0",
26 |     "expo-constants": "~9.3.3",
27 |     "expo-font": "~8.4.0",
28 |     "expo-gl": "~9.2.0",
29 |     "expo-image-manipulator": "~8.4.0",
30 |     "expo-image-picker": "~9.2.0",
31 |     "expo-linking": "~2.0.1",
32 |     "expo-permissions": "~10.0.0",
33 |     "expo-splash-screen": "~0.8.1",
34 |     "expo-status-bar": "~1.0.3",
35 |     "expo-web-browser": "~8.6.0",
36 |     "jpeg-js": "^0.3.7",
37 |     "react": "16.13.1",
38 |     "react-dom": "16.13.1",
39 |     "react-native": "0.63.4",
40 |     "react-native-elements": "^2.3.1",
41 |     "react-native-fs": "^2.16.6",
42 |     "react-native-gesture-handler": "~1.8.0",
43 |     "react-native-markdown-display": "^6.1.6",
44 |     "react-native-paper": "^4.0.1",
45 |     "react-native-safe-area-context": "3.1.9",
46 |     "react-native-screens": "~2.15.2",
47 |     "react-native-unimodules": "~0.12.0",
48 |     "react-native-web": "~0.13.12"
49 |   },
50 |   "devDependencies": {
51 |     "@babel/core": "~7.9.0",
52 |     "@types/react": "~16.9.35",
53 |     "@types/react-native": "~0.63.2",
54 |     "babel-preset-expo": "8.3.0",
55 |     "jest-expo": "^40.0.0",
56 |     "typescript": "~4.0.0"
57 |   },
58 |   "private": true
59 | }
60 | 


--------------------------------------------------------------------------------
/screens/AboutScreen.tsx:
--------------------------------------------------------------------------------
 1 | import * as React from 'react';
 2 | import { StyleSheet } from 'react-native';
 3 | 
 4 | import { View } from '../components/Themed';
 5 | import Markdown from 'react-native-markdown-display';
 6 | import {AppConfig} from  "../config"
 7 | import {getColor} from "../components/Themed"
 8 | export default function AboutScreen() {
 9 |   const color = getColor('text')
10 |   return (
11 |     <View style={styles.container}>
12 | 
13 |       <Markdown  style={{
14 |                 body: {color: color},
15 |               
16 |               }}>
17 |             {AppConfig.description}
18 |           </Markdown>
19 |     </View>
20 |   );
21 | }
22 | 
23 | const styles = StyleSheet.create({
24 |   container: {
25 |     flex: 1,
26 |     alignItems: 'center',
27 |     justifyContent: 'space-between',
28 |     paddingHorizontal: 10
29 |   }
30 |   
31 | 
32 | });
33 | 


--------------------------------------------------------------------------------
/screens/DebugScreen.tsx:
--------------------------------------------------------------------------------
 1 | import * as React from 'react';
 2 | import { StyleSheet } from 'react-native';
 3 | 
 4 | import { View, Text} from '../components/Themed';
 5 | import Markdown from 'react-native-markdown-display';
 6 | import {AppConfig} from  "../config"
 7 | import {getColor} from "../components/Themed"
 8 | export default function DebugScreen() {
 9 |   const color = getColor('text')
10 |   const modelClasses = require("../assets/model_tfjs/classes.json")
11 | 
12 |   return (
13 |     <View style={styles.container}>
14 |         <View style={{}}>
15 |           <Text h2 >Classes</Text>
16 |         </View>
17 | 
18 |        <View>
19 |           {modelClasses.map(p => {
20 |             return (
21 |               <View key={p} >
22 |                 <Text>{p}</Text>
23 |               </View>
24 |             );
25 |           })}
26 |        </View>
27 |     </View>
28 |   );
29 | }
30 | 
31 | const styles = StyleSheet.create({
32 |   container: {
33 |     flex: 1,
34 |     paddingHorizontal: 10
35 |   }
36 |   
37 | 
38 | });
39 | 


--------------------------------------------------------------------------------
/screens/HomeScreen.tsx:
--------------------------------------------------------------------------------
  1 | import * as React from 'react';
  2 | 
  3 | //import { Text, View } from '../components/Themed';
  4 | 
  5 | import * as Permissions from 'expo-permissions'
  6 | import * as tf from '@tensorflow/tfjs';
  7 | import * as ImageManipulator from 'expo-image-manipulator';
  8 | 
  9 | 
 10 | import {
 11 |   Image,
 12 |   StyleSheet,
 13 | } from 'react-native';
 14 | import {AppConfig} from "../config"
 15 | 
 16 | import {Text ,View,getColor,ActivityIndicator,ScrollView} from '../components/Themed'
 17 | 
 18 | import {Icon, ListItem} from 'react-native-elements';
 19 | 
 20 | 
 21 | import * as ImagePicker from 'expo-image-picker';
 22 | import { ModelService, IModelPredictionResponse,IModelPredictionTiming,ModelPrediction } from '../components/ModelService';
 23 | 
 24 | 
 25 | type State = {
 26 |   image: ImageManipulator.ImageResult; 
 27 |   loading:boolean;
 28 |   isTfReady: boolean;
 29 |   isModelReady: boolean;
 30 |   predictions: ModelPrediction[]|null;
 31 |   error:string|null;
 32 |   timing:IModelPredictionTiming|null;
 33 | };
 34 | 
 35 | export default class HomeScreen extends React.Component<{},State> {
 36 |   static navigationOptions = {
 37 |     header: null,
 38 |   };
 39 | 
 40 |   state:State = {
 41 |       image: {},
 42 |       loading: false,
 43 |       isTfReady: false,
 44 |       isModelReady: false,
 45 |       predictions: null,
 46 |       error:null,
 47 |       timing:null
 48 |   }
 49 | 
 50 |   modelService!:ModelService;
 51 | 
 52 |   async componentDidMount() {
 53 |     this.setState({ loading: true });
 54 |     this.modelService = await ModelService.create(AppConfig.imageSize);
 55 |     this.setState({ isTfReady: true,isModelReady: true,loading: false  });
 56 |   }
 57 | 
 58 |   render() {
 59 | 
 60 |     const modelLoadingStatus = this.state.isModelReady ? "✅" : "❓";
 61 |     return (
 62 |         <ScrollView style={styles.container} contentContainerStyle={styles.contentContainer}>
 63 |             <View style={styles.container} >
 64 | 
 65 |                 <View style={styles.titleContainer}>
 66 |                     <Text h1>{AppConfig.title}</Text>
 67 |                 </View>
 68 | 
 69 | 
 70 |                 <View>
 71 |                   <Text>Model Status: {modelLoadingStatus}</Text>
 72 |                 </View>
 73 | 
 74 |                 <View style={styles.actionsContainer}>
 75 |                     <View style={styles.callToActionContainer}>
 76 |                         <Icon name='camera-alt' raised onPress={this._pickImageFromCamera}/>
 77 |                         <Icon name='image' raised onPress={this._pickImageFromLibrary}/>
 78 |                     </View>
 79 |                 </View>
 80 | 
 81 |                 <View style={styles.imageContainer}>
 82 |                     <Image source={this.state.image} style={{height: 200, width: 200}}/>
 83 |                 </View>
 84 | 
 85 | 
 86 |                 <View style={styles.predictionsContainer}>
 87 |                     {this.renderPredictions()}
 88 |                 </View>
 89 |             </View>
 90 | 
 91 |         </ScrollView>
 92 |     );
 93 |   }
 94 | 
 95 | 
 96 |   renderPredictions() {
 97 |       if (this.state.loading) {
 98 |           return <ActivityIndicator/>
 99 |       }
100 |       let predictions= this.state.predictions || [];
101 |    
102 |       if (predictions.length > 0) {
103 |           return (
104 |               <View style={styles.predictionsContentContainer}>
105 |                   <Text h3>Predictions</Text>
106 |                   <View>
107 |                       {
108 |                           predictions.map((item, index) => (
109 |                               <ListItem key={index} >
110 |                                 <ListItem.Content >
111 | 
112 |                                   <ListItem.Title>{item.className}</ListItem.Title>
113 |                                   <ListItem.Subtitle>{`prob: ${item.probability.toFixed(AppConfig.precision)}`}</ListItem.Subtitle>
114 |                                 </ListItem.Content>
115 | 
116 |                               </ListItem>
117 |                           ))
118 |                       }
119 |                   </View>
120 | 
121 | 
122 |                   <Text h3>Timing (ms)</Text>
123 |                   <View>
124 |                     <Text>total time: {this.state.timing?.totalTime}</Text>
125 |                     <Text>loading time: {this.state.timing?.imageLoadingTime}</Text>
126 |                     <Text>preprocessing time: {this.state.timing?.imagePreprocessing}</Text>
127 |                     <Text>prediction time: {this.state.timing?.imagePrediction}</Text>
128 |                     <Text>decode time: {this.state.timing?.imageDecodePrediction}</Text>
129 |                    
130 |                   </View>
131 | 
132 |               </View>
133 |           )
134 |       } else {
135 |           return null
136 |       }
137 |   }
138 | 
139 | 
140 |   _verifyPermissions = async () => {
141 |       console.log("Verifying Permissions");
142 |       const { status, expires, permissions } = await Permissions.getAsync(Permissions.CAMERA, Permissions.CAMERA_ROLL);
143 | 
144 |       if (status !== 'granted') {
145 |           const { status, permissions }  = await Permissions.askAsync(Permissions.CAMERA, Permissions.CAMERA_ROLL)
146 |         
147 |           if (status === 'granted') {
148 |               console.log("Permissions granted");
149 |               return true
150 |           } else {
151 |               alert('Hey! You have not enabled selected permissions');
152 |               return false
153 |           }
154 | 
155 |       }else{
156 |           return true;
157 |       }
158 |   };
159 | 
160 |   _pickImageFromLibrary = async () => {
161 |       const status = await this._verifyPermissions();
162 | 
163 |       try {
164 |         let response = await ImagePicker.launchImageLibraryAsync({
165 |           mediaTypes: ImagePicker.MediaTypeOptions.Images,
166 |           allowsEditing: true,
167 |           aspect: [4, 3]
168 |         })
169 | 
170 |         if (!response.cancelled) {
171 |           //const source = { uri: response.uri }
172 | 
173 |           //this.setState({ image: source })
174 |           this._classifyImage(response.uri)
175 |         }
176 |       } catch (error) {
177 |         console.log(error)
178 |       }
179 | 
180 |   };
181 | 
182 |   _pickImageFromCamera = async () => {
183 |       const status = await this._verifyPermissions();
184 | 
185 |       try {
186 | 
187 |         let response = await ImagePicker.launchCameraAsync({
188 |             mediaTypes: ImagePicker.MediaTypeOptions.Images,
189 |             allowsEditing: true,
190 |             aspect: [4, 3]
191 |         });
192 | 
193 |         if (!response.cancelled) {
194 |           //const source = { uri: response.uri }
195 |           
196 |           this._classifyImage(response.uri)
197 |         }
198 |     }  catch (error) {
199 |       console.log(error)
200 |     }
201 | 
202 |   };
203 | 
204 |   _classifyImage = async (imageUri:string) => {
205 |     try {
206 |       const res:ImageManipulator.ImageResult = await ImageManipulator.manipulateAsync(imageUri,
207 |         [{ resize: { width:AppConfig.imageSize, height:AppConfig.imageSize }}],
208 |         { compress: 1, format: ImageManipulator.SaveFormat.JPEG,base64:true }
209 |         );
210 |       
211 |       this.setState({ image: res})
212 |       console.log('numTensors (before prediction): ' + tf.memory().numTensors);
213 |       this.setState({ predictions: [] ,error:null , loading:true })
214 | 
215 |       const predictionResponse = await this.modelService.classifyImage(res);
216 |       
217 |       
218 |       if (predictionResponse.error){
219 |         this.setState({ error: predictionResponse.error , loading:false})
220 |       }else{
221 |         const predictions = predictionResponse.predictions  || null;
222 |         this.setState({ predictions: predictions, timing:predictionResponse.timing,  loading:false})
223 |       }
224 |       
225 |       
226 |       //tf.dispose(predictions);
227 |       console.log('numTensors (after prediction): ' + tf.memory().numTensors);
228 | 
229 |     } catch (error) {
230 |       console.log('Exception Error: ', error)
231 |     }
232 |   }
233 | 
234 | }
235 | 
236 | 
237 | const styles = StyleSheet.create({
238 |   container: {
239 |       paddingTop: 5,
240 |       flex: 1,
241 |   },
242 | 
243 |   contentContainer: {
244 |       alignItems: 'center',
245 |       justifyContent: 'center',
246 | 
247 |   },
248 |   titleContainer: {
249 |       alignItems: 'center',
250 |       marginTop: 10,
251 |       //flex: 2,
252 |       justifyContent: 'center',
253 |   },
254 |   actionsContainer: {
255 |       alignItems: 'center',
256 |       marginTop: 5,
257 |       marginBottom: 5,
258 |       //flex: 1,
259 |   },
260 |   imageContainer: {
261 |       alignItems: 'center',
262 |   },
263 |   callToActionContainer: {
264 |       flexDirection: "row"
265 |   },
266 | 
267 |   feedBackActionsContainer: {
268 |       flexDirection: "row"
269 |   },
270 | 
271 |   predictionsContainer: {
272 |       padding: 10,
273 |       justifyContent: 'center',
274 |   },
275 | 
276 |   predictionsContentContainer: {
277 |       padding: 10,
278 |   },
279 |   predictionRow: {
280 |       flexDirection: "row",
281 |   },
282 |   predictionRowCategory: {
283 |       justifyContent: "space-between"
284 |   },
285 |   predictionRowLabel: {
286 |       justifyContent: "space-between"
287 |   }
288 | });
289 | 


--------------------------------------------------------------------------------
/screens/NotFoundScreen.tsx:
--------------------------------------------------------------------------------
 1 | import { StackScreenProps } from '@react-navigation/stack';
 2 | import * as React from 'react';
 3 | import { StyleSheet, Text, TouchableOpacity, View } from 'react-native';
 4 | 
 5 | import { RootStackParamList } from '../types';
 6 | 
 7 | export default function NotFoundScreen({
 8 |   navigation,
 9 | }: StackScreenProps<RootStackParamList, 'NotFound'>) {
10 |   return (
11 |     <View style={styles.container}>
12 |       <Text style={styles.title}>This screen doesn't exist.</Text>
13 |       <TouchableOpacity onPress={() => navigation.replace('Root')} style={styles.link}>
14 |         <Text style={styles.linkText}>Go to home screen!</Text>
15 |       </TouchableOpacity>
16 |     </View>
17 |   );
18 | }
19 | 
20 | const styles = StyleSheet.create({
21 |   container: {
22 |     flex: 1,
23 |     backgroundColor: '#fff',
24 |     alignItems: 'center',
25 |     justifyContent: 'center',
26 |     padding: 20,
27 |   },
28 |   title: {
29 |     fontSize: 20,
30 |     fontWeight: 'bold',
31 |   },
32 |   link: {
33 |     marginTop: 15,
34 |     paddingVertical: 15,
35 |   },
36 |   linkText: {
37 |     fontSize: 14,
38 |     color: '#2e78b7',
39 |   },
40 | });
41 | 


--------------------------------------------------------------------------------
/test.md:
--------------------------------------------------------------------------------
1 | 
2 | 


--------------------------------------------------------------------------------
/tsconfig.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "compilerOptions": {
 3 |     "allowSyntheticDefaultImports": true,
 4 |     "jsx": "react-native",
 5 |     "lib": ["dom", "esnext"],
 6 |     "moduleResolution": "node",
 7 |     "noEmit": true,
 8 |     "skipLibCheck": true,
 9 |     "resolveJsonModule": true,
10 |     "strict": true
11 |   }
12 | }
13 | 


--------------------------------------------------------------------------------
/types.tsx:
--------------------------------------------------------------------------------
 1 | export type RootStackParamList = {
 2 |   Root: undefined;
 3 |   NotFound: undefined;
 4 | };
 5 | 
 6 | export type BottomTabParamList = {
 7 |   Home: undefined;
 8 |   About: undefined;
 9 |   Debug: undefined;
10 | };
11 | 
12 | export type HomeParamList = {
13 |   HomeScreen: undefined;
14 | };
15 | 
16 | export type AboutParamList = {
17 |   AboutScreen: undefined;
18 | };
19 | 
20 | export type DebugParamList = {
21 |   DebugScreen: undefined;
22 | };
23 | 


--------------------------------------------------------------------------------